320909696 has 64 divisors (see below), whose sum is σ = 678912000. Its totient is φ = 150667776.

The previous prime is 320909683. The next prime is 320909713. The reversal of 320909696 is 696909023.

320909696 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308345 + ... + 309383.

It is an arithmetic number, because the mean of its divisors is an integer number (10608000).

Almost surely, 2^320909696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320909696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339456000).

320909696 is an abundant number, since it is smaller than the sum of its proper divisors (358002304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320909696 is a wasteful number, since it uses less digits than its factorization.

320909696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1187 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 320909696 is about 17913.9525510145. The cubic root of 320909696 is about 684.6379147354.

The spelling of 320909696 in words is "three hundred twenty million, nine hundred nine thousand, six hundred ninety-six".